Techniques › T1620 › AN0840
AN0840 Analytic 0840
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Suspicious calls to dlopen(), dlsym(), or mmap with RWX flags in processes that do not typically perform dynamic module loading. Monitor anonymous memory regions executed by user processes.</p>
- Detects
- T1620 Reflective Code Loading
- Part of
- DET0300 Detection Strategy for Reflective Code Loading
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| macos:unifiedlog | execve or dylib load from memory without backing file | DC0032 Process Creation |
| macos:unifiedlog | suspicious dlopen/dlsym usage in non-development processes | DC0016 Module Load |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
ApplicationScope | Developer tools may legitimately call dlopen/dlsym; narrow scope to production workloads. |
ExecutionTimeWindow | Correlate suspicious loads with subsequent process activity in a defined window. |